Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaul by rw semaphores

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Alan Cox wrote:
I am still not clear if this is just cache corruption through us not
listening or whether we genuinely need to halt.
Especially buggy steppings of C3s would stop snooping while in 'hlt', so it wouldn't surprise me if they stopped while doing a speed transition.

 In the former case
flushing and disabling the CPU caches ought to be sufficient.
Sounds reasonable, unless that causes problems of its own. (My general experience with Via CPUs is that doing anything even slightly unusual will result in strange behaviour or outright buggyness.)

   J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux